Two-revolution fast printing press



Nov. 22, 1927. Y. 1,650,282

- w. KOLMER ET -AL TWO REVOLUTION FAST PRINTING PRESS Filed April 22. 1926 Maw wuzzw M Patented Nov. 22, 1927.

* UNITED STATES PATENT OFFICE.

WILHELM KOLlVIER AND ERI-IARD wmscnmenn, or AUGSBURG, GERMANY, AS- SIGNORS TO. MASOHINENFAIBRIK AUGSBURGr-NUERNBERG, AK'IIENGESELLSCHAFT, or AUGSBURG, GERMANY, A GORPORATIONOF GERMANY. 1

'rvvo-ruivomrrroiv rAs'tr" mama rnnss.

Application filed April 22, 1926, Serial No. 103,815, and in Germany May 9, 1925.

In the well known two-revolution fast printing presses, the ink trough together with the ductor roll and vibrator is arranged near the front edge of the machine below 5 the delivery table, so that the operator who stands in front of the machine can see the printed sheets as they are delivered to the delivery table and can regulate the operation of the inking apparatus. In this type of machine, the ink is taken off the vibrator by areciprocating table which serves at the same time as the ink distributing table, and whereby the ink is transferred to the inking device proper. The distributing rollers are,

5 in this type of machine, also arranged below the delivery table. Such a machine permits only a comparatively low small pile of sheets to be worked with, which necessitates frequent changing of the sheet pile,

causing much loss of time now the present object of the invention is to obviate this defect.

According to this invention, the inking apparatus which is designed as a cylinder inking apparatus, is arrangedbetween the impression cylinder and the delivery table for the printed sheets. The ink is transferred to the inking device in well known manner by means of an ink table which receives a band of ink from a vibrator located near the front edge of the machine, and transferring the ink to a vibrator of the cylinder inking device. The first named vibrator which picks up the ink from the ductor roll, is placed at such alow level that the apex of the vibrator in its upper position does not lie above or lies only very slightly, above the top surface of the letterpress or other printing surface. This arrangement surface of the letterpress or other printing surface and the delivery deviceto be utilized for the vertically adjustable delivery pile table. The pile of delivered printed sheets may therefore be much higher than in the old machines, so that itneed not be so frequently removed. 7

The drawing shows diagrammatically by way of example one embodiment of the invention in elevation. r

i The printed sheets are discharged in wellknown manner from the impression cylinder a by means of the delivery tapes I) and are delivered to the table 0 which is vertically enables the entire space between the upper.

adjustable. The inking device proper d is arranged between the impression cylinder (1 and the delivery table a. The ink trough 6 provided with the ductor roll 7 is arranged near the front edge of the machine. The vibrator g which takes a band of ink off the ductor roll f, is arranged so low that its apex, in the upper position of the roll does not project above the surface of the letterpress or other printing surface h. The ink is taken from the vibrator g by a reciprocating table 2' and is thereby transferred to a second vibrator 70 which in turn transfers the ink to the distributing rollers of the cylinder inking device. The vibrator k is arranged to move downwards to pick up the latter from the ink table '5 whilst the ink travels under the vibrator toward the impression cylinder (1. During the remainder of the operation the vibrator It remains above the letterpress or other printing surface 71. and participates in the distribution of the ink. The ink is transferred by the vibrator 7a to the distributing rollers Z and by these rollers to the inking rollers cl. Additional ink distributing rolls m may be provided upon the ink table a in the well known manner. These additional rolls m must, of course, also be arranged so low that their apices lie below the surface of the letterpress or other printing surface h. As shown in the drawing, the vibrator K is carried by a lever n adapted to be rocked about the axis of roller Z, by means of the pivoted links 0 and p, by

the two-arm lever r, pivoted at g and actu ated by the cam s. The latter is mounted on a rotatable shaft driven in any convenient mannen What we claim is:

' 1. In a two-revolution fast printingpress,

the combination with the impression cylin-der, the delivery table and the ink distributing device interposed between saidimpression cylinder and delivery table, of an ink trough located at the front. of the "machine, a vibrator adapted to receive ink from said ink trough and located in a horizontal plane below the printing surface, and

a reciprocating table adaptcdto cooperate with said vibrator and to transfer the ink therefrom to said ink distributing device.

2. The combination as specified in claim lcomprising a second vibrator, and means for periodically rocking said second vibrator into contact with said reciprocating table. 0nd vibrator into contact with said recip- 3. The combination as specified in claim rocating table. 1 comprising a second vibrator said second In testimony whereof We have aflixed our 10 vibrator forming a part of said ink dissignatures. i 5 tributing device and adapted to rock about 7 the axis of one of the distributing rollers, WILHELM KOLMER, and means for periodically rocking said sec- ERHARD \VIRSCHINGER. 

